US President Donald Trump on Saturday announced that he will host Ukrainian President Volodymyr Zelenskyy in the Oval Office in Washington on Monday, adding that if all goes well, a meeting with President Putin will be scheduled afterward. US President Donald Trump on Saturday announced that he will host Ukrainian President Volodymyr Zelenskyy in the Oval Office in Washington on Monday, adding that if all goes well, a meeting with President Putin will be scheduled afterward.